A question for all
Archiver
Posts: 46,084
im currently working on a project where my stamp controls the power to my
fridge/lighting/hot water cylinder. I have a few ideas on how to physically
control the power, but have no idea on how to go about it. Someone told me
about a Solid State Relay - Would This work? How would this work? (ive never
worked with these before).
Also any ideas on this subject or how to program the stamp to communicate
with the relay itself would be much appreciated, as im still learning [noparse]:)[/noparse]
Market Pulse International Ltd.
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necessarily represent those of Market Pulse Ltd unless specifically stated."
[noparse][[/noparse]Non-text portions of this message have been removed]
fridge/lighting/hot water cylinder. I have a few ideas on how to physically
control the power, but have no idea on how to go about it. Someone told me
about a Solid State Relay - Would This work? How would this work? (ive never
worked with these before).
Also any ideas on this subject or how to program the stamp to communicate
with the relay itself would be much appreciated, as im still learning [noparse]:)[/noparse]
Market Pulse International Ltd.
Ph: +64 9 623 2999
Fax: +64 9 623 2998
Web: www.marketpulse.co.nz
DISCLAIMER: "The information in this email and in any attachments is
confidential and intended solely for the attention and use of the addressee(s).
If this email is not intended for you, you must not use, read, distribute or
copy it. If you have received this email by mistake please reply to the sender
and/or erase the email and any attachments, and any copies of the same. Any
views or opinions expressed are solely those of the author and do not
necessarily represent those of Market Pulse Ltd unless specifically stated."
[noparse][[/noparse]Non-text portions of this message have been removed]
Comments
command to interface specifically with these devices. There is also a
variety of software you can use to communicate with these things directly
from a PC.
nick
on 24/9/02 12:26 AM, Gareth Jones at garethj@m... wrote:
> im currently working on a project where my stamp controls the power to my
> fridge/lighting/hot water cylinder. I have a few ideas on how to physically
> control the power, but have no idea on how to go about it. Someone told me
> about a Solid State Relay - Would This work? How would this work? (ive never
> worked with these before).
>
> Also any ideas on this subject or how to program the stamp to communicate
> with the relay itself would be much appreciated, as im still learning [noparse]:)[/noparse]
>
> Market Pulse International Ltd.
> Ph: +64 9 623 2999
> Fax: +64 9 623 2998
> Web: www.marketpulse.co.nz
>
> DISCLAIMER: "The information in this email and in any attachments is
> confidential and intended solely for the attention and use of the
> addressee(s). If this email is not intended for you, you must not use, read,
> distribute or copy it. If you have received this email by mistake please reply
> to the sender and/or erase the email and any attachments, and any copies of
> the same. Any views or opinions expressed are solely those of the author and
> do not necessarily represent those of Market Pulse Ltd unless specifically
> stated."
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and Body
> of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
I would strongly suggest that you look into the "stamps in class" download
material at the parallax site. There is an excellent tutorial on Industrial
Control available there. If the principles and devices you mention really
are new to you, it would be a good idea to read through the experiments
there and actually put together and test some of them before jumping into
such a project. Why do I say this?
Controlling AC lines and appliances are activities that have serious
implications and more than a basic understanding is needed in order to do so
safely (for both people and equipment.) For example how will you handle an
on or off event with your fridge if it is in the defrost mode and the heater
is running. Does yours have a mechanical timer that will continue where it
left off when re-started, or does it have a digital timer that will reset
and start timing a heater cycle again, potentially doubling the deforst
heater cycle time and ruining your milk and cheese (possibly melting the
plastic freezer liner? Turning lighting on and off is fairly simple, but
dimming requires yet another skill set. An Electric water heater typically
has a couple of heaters of fairly high wattage - how will you handle the
failure mode of a solid state relay, which is typically in the closed
condition? If you were to use an overheat thermostat to detect such a thing
through a stamp input would that be reliable enough to protect your water
cylinder and plumbing from the pressure that would result from the
overheat?....if something went wrong would your insurance policy cover any
damage or injury in such a case?
I'm not trying to discourage you, rather encouraging you to think this
through deeply and get well prepared first. To be sure, there are many
serious implications to be considered, as well as practical experience that
must be gained before taking on such a project.
Perhaps building such a control system as a mock-up with dummy loads and
perfecting it "off-line" for many days first would still be a good idea.
>
> im currently working on a project where my stamp controls the
> power to my
> fridge/lighting/hot water cylinder. I have a few ideas on
> how to physically
> control the power, but have no idea on how to go about it.
> Someone told me
> about a Solid State Relay - Would This work? How would this
> work? (ive never
> worked with these before).
>
> Also any ideas on this subject or how to program the stamp to
> communicate
> with the relay itself would be much appreciated, as im still
> learning [noparse]:)[/noparse]
>
to be able to control your lights/fridge/hotwater in your holiday home
remotely. also ive done a bit of planning and not really ready to
physically test anything "live" until the end of the year at least. the
fridge is simple on/off fridge, with no defrost etc. so its pretty much
just an on/off project. i wouldnt be needing to dim the lights, although it
would be nice [noparse]:)[/noparse].
Original Message
From: Chris Loiacono (E-mail) [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=9y2h2plReSeia_Nu3qSlP3x_C4xnncYWfv4uSFUHOoEuEF5G_FUJEHHN-2RGJ57B0XynFq7UeV_L99LFPw]chris01@t...[/url
Sent: Wednesday, 25 September 2002 00:20
To: basicstamps@yahoogroups.com
Subject: RE: [noparse][[/noparse]basicstamps] A question for all
This is quite an ambitious project for you, Mike. Kudos for thinking big.
I would strongly suggest that you look into the "stamps in class" download
material at the parallax site. There is an excellent tutorial on Industrial
Control available there. If the principles and devices you mention really
are new to you, it would be a good idea to read through the experiments
there and actually put together and test some of them before jumping into
such a project. Why do I say this?
Controlling AC lines and appliances are activities that have serious
implications and more than a basic understanding is needed in order to do so
safely (for both people and equipment.) For example how will you handle an
on or off event with your fridge if it is in the defrost mode and the heater
is running. Does yours have a mechanical timer that will continue where it
left off when re-started, or does it have a digital timer that will reset
and start timing a heater cycle again, potentially doubling the deforst
heater cycle time and ruining your milk and cheese (possibly melting the
plastic freezer liner? Turning lighting on and off is fairly simple, but
dimming requires yet another skill set. An Electric water heater typically
has a couple of heaters of fairly high wattage - how will you handle the
failure mode of a solid state relay, which is typically in the closed
condition? If you were to use an overheat thermostat to detect such a thing
through a stamp input would that be reliable enough to protect your water
cylinder and plumbing from the pressure that would result from the
overheat?....if something went wrong would your insurance policy cover any
damage or injury in such a case?
I'm not trying to discourage you, rather encouraging you to think this
through deeply and get well prepared first. To be sure, there are many
serious implications to be considered, as well as practical experience that
must be gained before taking on such a project.
Perhaps building such a control system as a mock-up with dummy loads and
perfecting it "off-line" for many days first would still be a good idea.
>
> im currently working on a project where my stamp controls the
> power to my
> fridge/lighting/hot water cylinder. I have a few ideas on
> how to physically
> control the power, but have no idea on how to go about it.
> Someone told me
> about a Solid State Relay - Would This work? How would this
> work? (ive never
> worked with these before).
>
> Also any ideas on this subject or how to program the stamp to
> communicate
> with the relay itself would be much appreciated, as im still
> learning [noparse]:)[/noparse]
>
To UNSUBSCRIBE, just send mail to:
basicstamps-unsubscribe@yahoogroups.com
from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Market Pulse International Ltd.
Ph: +64 9 623 2999
Fax: +64 9 623 2998
Web: www.marketpulse.co.nz
DISCLAIMER: "The information in this email and in any attachments is
confidential and intended solely for the attention and use of the addressee(s).
If this email is not intended for you, you must not use, read, distribute or
copy it. If you have received this email by mistake please reply to the sender
and/or erase the email and any attachments, and any copies of the same. Any
views or opinions expressed are solely those of the author and do not
necessarily represent those of Market Pulse Ltd unless specifically stated."
[noparse][[/noparse]Non-text portions of this message have been removed]
open the door and let it air out. Some serious funk will grow in an icebox
if its unplugged for a while and left closed.
Original Message
> some great ideas there Chris, and some very valid points. But this idea
is
> to be able to control your lights/fridge/hotwater in your holiday home
> remotely. also ive done a bit of planning and not really ready to
> physically test anything "live" until the end of the year at least. the
> fridge is simple on/off fridge, with no defrost etc. so its pretty much
> just an on/off project. i wouldnt be needing to dim the lights, although
it
> would be nice [noparse]:)[/noparse].
>
Original Message
From: Chris Loiacono [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=D-o3xDP0PiYZStJ5t9doeGVmZ-4em0jit6o1zauhCkyHxgfJIVMgEbyVztQpsxUinkNhqQO1slzmillv]chris@m...[/url
Sent: Tuesday, September 24, 2002 4:50 PM
To: 'basicstamps@yahoogroups.com'
Subject: RE: [noparse][[/noparse]basicstamps] RE: [noparse][[/noparse]basic stamps] A question for all
My conscience wanted to contribute to your holiday home still being there
the next time you want to use it. No ofense intended.
Since you mention remote control, and I understand that you would be turning
things on in an un-occupied house, this is all the more reason for using a
mechanical contactor on the fridge in place of an SSR.
BTW, have you checked X10's offerings in this area? They have the interface
covered quite well....you could probably work out the remote controller on
your own and still maintain insurance coverage...
Sorry if I am a bit edgy on the subject of safety, here's why: I recently
had someone miswire one of my 480 volt designs and he narrowly escaped from
the ensuing megabucks firworks display... I also am part of an ISO safety
standards committee and just finished reviewing a case that resulted in a
death of a machine operator in Germany who made one simple mistake....
CL
>
Original Message
> From: Gareth Jones [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=X0XFp7Z0QFNsfdEwSWHrqOi1ndg4wkJv68NTUMqRBMMiVZdRAjVIW0TTXg5HQJoeEyEflV6mSaaSf2n8jQqRL68Eag]garethj@m...[/url
> Sent: Tuesday, September 24, 2002 4:26 PM
> To: 'basicstamps@yahoogroups.com'
> Subject: [noparse][[/noparse]basicstamps] RE: [noparse][[/noparse]basic stamps] A question for all
>
>
> some great ideas there Chris, and some very valid points.
> But this idea is
> to be able to control your lights/fridge/hotwater in your holiday home
> remotely. also ive done a bit of planning and not really ready to
> physically test anything "live" until the end of the year at
> least. the
> fridge is simple on/off fridge, with no defrost etc. so its
> pretty much
> just an on/off project. i wouldnt be needing to dim the
> lights, although it
> would be nice [noparse]:)[/noparse].
>
>
Original Message
> From: Chris Loiacono (E-mail) [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=Wy6L8YWYsGE-oxXL7mK7nVsMVh9884zasxyezK-O7ZaJWZLXaL-omsqhRtZQ5gLHMMxc3_mvugncahSuHTQ]chris01@t...[/url
> Sent: Wednesday, 25 September 2002 00:20
> To: basicstamps@yahoogroups.com
> Subject: RE: [noparse][[/noparse]basicstamps] A question for all
>
>
> This is quite an ambitious project for you, Mike. Kudos for
> thinking big.
>
> I would strongly suggest that you look into the "stamps in
> class" download
> material at the parallax site. There is an excellent tutorial
> on Industrial
> Control available there. If the principles and devices you
> mention really
> are new to you, it would be a good idea to read through the
> experiments
> there and actually put together and test some of them before
> jumping into
> such a project. Why do I say this?
>
> Controlling AC lines and appliances are activities that have serious
> implications and more than a basic understanding is needed in
> order to do so
> safely (for both people and equipment.) For example how will
> you handle an
> on or off event with your fridge if it is in the defrost mode
> and the heater
> is running. Does yours have a mechanical timer that will
> continue where it
> left off when re-started, or does it have a digital timer
> that will reset
> and start timing a heater cycle again, potentially doubling
> the deforst
> heater cycle time and ruining your milk and cheese (possibly
> melting the
> plastic freezer liner? Turning lighting on and off is fairly
> simple, but
> dimming requires yet another skill set. An Electric water
> heater typically
> has a couple of heaters of fairly high wattage - how will you
> handle the
> failure mode of a solid state relay, which is typically in the closed
> condition? If you were to use an overheat thermostat to
> detect such a thing
> through a stamp input would that be reliable enough to
> protect your water
> cylinder and plumbing from the pressure that would result from the
> overheat?....if something went wrong would your insurance
> policy cover any
> damage or injury in such a case?
>
> I'm not trying to discourage you, rather encouraging you to think this
> through deeply and get well prepared first. To be sure, there are many
> serious implications to be considered, as well as practical
> experience that
> must be gained before taking on such a project.
>
> Perhaps building such a control system as a mock-up with
> dummy loads and
> perfecting it "off-line" for many days first would still be a
> good idea.
> >
> > im currently working on a project where my stamp controls the
> > power to my
> > fridge/lighting/hot water cylinder. I have a few ideas on
> > how to physically
> > control the power, but have no idea on how to go about it.
> > Someone told me
> > about a Solid State Relay - Would This work? How would this
> > work? (ive never
> > worked with these before).
> >
> > Also any ideas on this subject or how to program the stamp to
> > communicate
> > with the relay itself would be much appreciated, as im still
> > learning [noparse]:)[/noparse]
> >
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the
> Subject and
> Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
>
>
> Market Pulse International Ltd.
> Ph: +64 9 623 2999
> Fax: +64 9 623 2998
> Web: www.marketpulse.co.nz
>
> DISCLAIMER: "The information in this email and in any
> attachments is confidential and intended solely for the
> attention and use of the addressee(s). If this email is not
> intended for you, you must not use, read, distribute or copy
> it. If you have received this email by mistake please reply
> to the sender and/or erase the email and any attachments, and
> any copies of the same. Any views or opinions expressed are
> solely those of the author and do not necessarily represent
> those of Market Pulse Ltd unless specifically stated."
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the
> Subject and Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
>
>
Also ill look into the insurance policy and get some advice on the safty
issues and maybe implement some fail-safe devices?
Also any ideas on how i could remotely control theses devices (maybe
dial-in?) would be great.
Thanks for all the ideas people, you're probably saving me allot of money [noparse]:D[/noparse]
Original Message
From: Chris Loiacono [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=MYFUkXiypUS5EJVv7SnXet_G4UVgtIGvBd0J047w9MU5wERaYmDRsoqkU3-rZ4FNioAoPGhdJpY]chris@m...[/url
Sent: Tuesday, September 24, 2002 4:50 PM
To: 'basicstamps@yahoogroups.com'
Subject: RE: [noparse][[/noparse]basicstamps] RE: [noparse][[/noparse]basic stamps] A question for all
My conscience wanted to contribute to your holiday home still being there
the next time you want to use it. No ofense intended.
Since you mention remote control, and I understand that you would be turning
things on in an un-occupied house, this is all the more reason for using a
mechanical contactor on the fridge in place of an SSR.
BTW, have you checked X10's offerings in this area? They have the interface
covered quite well....you could probably work out the remote controller on
your own and still maintain insurance coverage...
Sorry if I am a bit edgy on the subject of safety, here's why: I recently
had someone miswire one of my 480 volt designs and he narrowly escaped from
the ensuing megabucks firworks display... I also am part of an ISO safety
standards committee and just finished reviewing a case that resulted in a
death of a machine operator in Germany who made one simple mistake....
CL
>
Original Message
> From: Gareth Jones [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=hVe79T_u462p4MdnNUfpN05kWSuNJZ_cY3mJVVz_-8oA4vlGZRrVLN8t5DYTCDn2qwmixhud1vkUgJQ9MW3kFg]garethj@m...[/url
> Sent: Tuesday, September 24, 2002 4:26 PM
> To: 'basicstamps@yahoogroups.com'
> Subject: [noparse][[/noparse]basicstamps] RE: [noparse][[/noparse]basic stamps] A question for all
>
>
> some great ideas there Chris, and some very valid points.
> But this idea is
> to be able to control your lights/fridge/hotwater in your holiday home
> remotely. also ive done a bit of planning and not really ready to
> physically test anything "live" until the end of the year at
> least. the
> fridge is simple on/off fridge, with no defrost etc. so its
> pretty much
> just an on/off project. i wouldnt be needing to dim the
> lights, although it
> would be nice [noparse]:)[/noparse].
>
>
Original Message
> From: Chris Loiacono (E-mail) [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=Qw-A-f04HejLfZuqWEUxFRPWchvP2KRd8ivTB577XIcx7lVMemtw3ntIPmWI7id-g-Y2r7o9YsFuZVieOg]chris01@t...[/url
> Sent: Wednesday, 25 September 2002 00:20
> To: basicstamps@yahoogroups.com
> Subject: RE: [noparse][[/noparse]basicstamps] A question for all
>
>
> This is quite an ambitious project for you, Mike. Kudos for
> thinking big.
>
> I would strongly suggest that you look into the "stamps in
> class" download
> material at the parallax site. There is an excellent tutorial
> on Industrial
> Control available there. If the principles and devices you
> mention really
> are new to you, it would be a good idea to read through the
> experiments
> there and actually put together and test some of them before
> jumping into
> such a project. Why do I say this?
>
> Controlling AC lines and appliances are activities that have serious
> implications and more than a basic understanding is needed in
> order to do so
> safely (for both people and equipment.) For example how will
> you handle an
> on or off event with your fridge if it is in the defrost mode
> and the heater
> is running. Does yours have a mechanical timer that will
> continue where it
> left off when re-started, or does it have a digital timer
> that will reset
> and start timing a heater cycle again, potentially doubling
> the deforst
> heater cycle time and ruining your milk and cheese (possibly
> melting the
> plastic freezer liner? Turning lighting on and off is fairly
> simple, but
> dimming requires yet another skill set. An Electric water
> heater typically
> has a couple of heaters of fairly high wattage - how will you
> handle the
> failure mode of a solid state relay, which is typically in the closed
> condition? If you were to use an overheat thermostat to
> detect such a thing
> through a stamp input would that be reliable enough to
> protect your water
> cylinder and plumbing from the pressure that would result from the
> overheat?....if something went wrong would your insurance
> policy cover any
> damage or injury in such a case?
>
> I'm not trying to discourage you, rather encouraging you to think this
> through deeply and get well prepared first. To be sure, there are many
> serious implications to be considered, as well as practical
> experience that
> must be gained before taking on such a project.
>
> Perhaps building such a control system as a mock-up with
> dummy loads and
> perfecting it "off-line" for many days first would still be a
> good idea.
> >
> > im currently working on a project where my stamp controls the
> > power to my
> > fridge/lighting/hot water cylinder. I have a few ideas on
> > how to physically
> > control the power, but have no idea on how to go about it.
> > Someone told me
> > about a Solid State Relay - Would This work? How would this
> > work? (ive never
> > worked with these before).
> >
> > Also any ideas on this subject or how to program the stamp to
> > communicate
> > with the relay itself would be much appreciated, as im still
> > learning [noparse]:)[/noparse]
> >
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the
> Subject and
> Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
>
>
> Market Pulse International Ltd.
> Ph: +64 9 623 2999
> Fax: +64 9 623 2998
> Web: www.marketpulse.co.nz
>
> DISCLAIMER: "The information in this email and in any
> attachments is confidential and intended solely for the
> attention and use of the addressee(s). If this email is not
> intended for you, you must not use, read, distribute or copy
> it. If you have received this email by mistake please reply
> to the sender and/or erase the email and any attachments, and
> any copies of the same. Any views or opinions expressed are
> solely those of the author and do not necessarily represent
> those of Market Pulse Ltd unless specifically stated."
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the
> Subject and Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
>
>
To UNSUBSCRIBE, just send mail to:
basicstamps-unsubscribe@yahoogroups.com
from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
[noparse][[/noparse]Non-text portions of this message have been removed]
attached that opens both doors when the mains are off for more than 2 hours.
Original Message
From: Rodent [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=rPc2QK-Utu3e1yu3DWZ-i00JJ0KhajJSnBlHjIvtk7eawvCXZwsNcmoOOX_AfESL5NmKGsqVvaSh]daweasel@s...[/url
Sent: Wednesday, 25 September 2002 08:41
To: basicstamps@yahoogroups.com
Subject: Re: [noparse][[/noparse]basicstamps] RE: [noparse][[/noparse]basic stamps] A question for all
trust me, you don't want to turn an ice box on and off without being able to
open the door and let it air out. Some serious funk will grow in an icebox
if its unplugged for a while and left closed.
Original Message
> some great ideas there Chris, and some very valid points. But this idea
is
> to be able to control your lights/fridge/hotwater in your holiday home
> remotely. also ive done a bit of planning and not really ready to
> physically test anything "live" until the end of the year at least. the
> fridge is simple on/off fridge, with no defrost etc. so its pretty much
> just an on/off project. i wouldnt be needing to dim the lights, although
it
> would be nice [noparse]:)[/noparse].
>
To UNSUBSCRIBE, just send mail to:
basicstamps-unsubscribe@yahoogroups.com
from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Market Pulse International Ltd.
Ph: +64 9 623 2999
Fax: +64 9 623 2998
Web: www.marketpulse.co.nz
DISCLAIMER: "The information in this email and in any attachments is
confidential and intended solely for the attention and use of the addressee(s).
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